ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Ultra-broadband asymmetric acoustic transmission with single transmitted beam |
Ding Jia(贾鼎)1, Hong-xiang Sun(孙宏祥)1,2, Shou-qi Yuan(袁寿其)1, Yong Ge(葛勇)1 |
1 Research Center of Fluid Machinery Engineering and Technology, Faculty of Science, Jiangsu University, Zhenjiang 212013, China;
2 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract We report both experimentally and numerically that ultra-broadband asymmetric acoustic transmission is realized by a brass plate and a right triangle reflector immersed in water. This exotic phenomenon arises from the asymmetric excitation of the leaky asymmetric zero-order Lamb mode in the brass plate induced by the incident angle of external bulk waves. The results show that the bandwidth of the asymmetric acoustic transmission could reach 2000 kHz, and the positive transmitted wave is only a single acoustic beam. The device has the advantages of ultra-broadband, single transmitted beam, and simpler structure, which has great potential applications in ultrasonic devices.
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Received: 09 October 2016
Revised: 15 November 2016
Accepted manuscript online:
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PACS:
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43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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43.20.+g
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(General linear acoustics)
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Fund: Project supported by the Major Program of the National Natural Science Foundation of China (Grant No. 51239005), the National Natural Science Foundation of China (Grant No. 11404147), the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20140519), China Postdoctoral Science Foundation (Grant No. 2015M571672), the Scientific Research Project for Graduate Students of Universities in Jiangsu Province, China (Grant No. CXZZ13_06), and the Training Project of Young Backbone Teachers of Jiangsu University. |
Corresponding Authors:
Hong-xiang Sun, Shou-qi Yuan
E-mail: jsdxshx@ujs.edu.cn;Shouqiy@ujs.edu.cn
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Cite this article:
Ding Jia(贾鼎), Hong-xiang Sun(孙宏祥), Shou-qi Yuan(袁寿其), Yong Ge(葛勇) Ultra-broadband asymmetric acoustic transmission with single transmitted beam 2017 Chin. Phys. B 26 024302
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